Remote
Debugging The Remote Tools for Visual Studio 2012 do not support remote
debugging on an XP client. When debugging on Windows XP is required, it
is recommended to use the debuggers of an older version of Visual
Studio, such as Visual Studio 2010, for local or remote debugging. This
is in line with the Windows Vista experience for Visual Studio 2012 RTM,
which is a runtime target but not a remote debugging target.

EDIT:

To enable the debugger to LOAD SYMBOLS for debugging - change NO AUTHENTICATION to WINDOWS AUTHENTICATION.